3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Marek Vasut <marex@xxxxxxx>
commit e1b1fa66a0398f0b52ae79a2bdc7de87c205d074 upstream.
The struct iio_dev .trig field is to be used only by the IIO core,
the driver shall not fill this field. This fixes ugly crash when
the driver is compiled as a module and the module is rmmod'd.
Signed-off-by: Marek Vasut <marex@xxxxxxx>
Cc: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
Cc: Jonathan Cameron <jic23@xxxxxxxxxx>
Cc: Shawn Guo <shawn.guo@xxxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/iio/adc/mxs-lradc.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -661,12 +661,13 @@ static int mxs_lradc_trigger_init(struct
{
int ret;
struct iio_trigger *trig;
+ struct mxs_lradc *lradc = iio_priv(iio);
trig = iio_trigger_alloc("%s-dev%i", iio->name, iio->id);
if (trig == NULL)
return -ENOMEM;
- trig->dev.parent = iio->dev.parent;
+ trig->dev.parent = lradc->dev;
iio_trigger_set_drvdata(trig, iio);
trig->ops = &mxs_lradc_trigger_ops;
@@ -676,15 +677,17 @@ static int mxs_lradc_trigger_init(struct
return ret;
}
- iio->trig = trig;
+ lradc->trig = trig;
return 0;
}
static void mxs_lradc_trigger_remove(struct iio_dev *iio)
{
- iio_trigger_unregister(iio->trig);
- iio_trigger_free(iio->trig);
+ struct mxs_lradc *lradc = iio_priv(iio);
+
+ iio_trigger_unregister(lradc->trig);
+ iio_trigger_free(lradc->trig);
}
static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
--
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